Ecology test worksheet featuring vocabulary words for students to use in completing definitions related to ecological concepts.

Here is the completed worksheet with explanations for each answer:

Worksheet: Ecology Test

#### Instructions:
Use the following words to fill in the blanks below.
- Community
- Decomposer
- Ecosystem
- Food web
- Omnivore
- Producer
- Scavenger
- Predator
- Herbivore
- Prey
- Extinct organism
- Consumer
- Carnivore
- Food chain
- Population
- Habitat
- Biosphere
- Ecosphere
- Photosynthesis
- Niche

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Questions and Answers:

1. animal hunted by another animal.
- Prey
Explanation: Prey refers to an animal that is hunted or eaten by another animal (the predator).

2. animal that hunts another animal for food.
- Predator
Explanation: A predator is an animal that hunts and eats other animals.

3. organisms that eat both plants and animals.
- Omnivore
Explanation: Omnivores are organisms that consume both plants and animals as part of their diet.

4. all the populations living together in a region.
- Community
Explanation: A community consists of all the different populations of organisms living together in a specific area.

5. overlapping food chains in an ecosystem.
- Food web
Explanation: A food web shows the complex network of interconnected food chains within an ecosystem.

6. organisms that break down remains of once-living things.
- Decomposer
Explanation: Decomposers, such as bacteria and fungi, break down dead organic matter and recycle nutrients back into the ecosystem.

7. living things and non-living things in an environment.
- Ecosystem
Explanation: An ecosystem includes all the living organisms (biotic factors) and non-living components (abiotic factors) in a specific area.

8. living things that make its own food.
- Producer
Explanation: Producers, such as plants, create their own food through photosynthesis.

9. organisms that eat only plants.
- Herbivore
Explanation: Herbivores are organisms that feed exclusively on plants.

10. animals that eat a dead animal it finds.
- Scavenger
Explanation: Scavengers are animals that feed on the carcasses of dead organisms.

11. Energy is transferred from one organism to another in a _________.
- Food chain
Explanation: Energy flows through an ecosystem in a linear sequence called a food chain, where energy is transferred from one organism to the next.

12. All the gray squirrels that live in an oak tree at a given time are called a _________.
- Population
Explanation: A population refers to all the individuals of the same species living in a specific area at a given time.

13. _________ is the organism’s way of life or occupation.
- Niche
Explanation: A niche describes the role or position of an organism in its environment, including how it obtains food, reproduces, and interacts with other organisms.

14. An organism that was once alive but no longer exists anywhere on the earth is an _________.
- Extinct organism
Explanation: An extinct organism is one that no longer exists on Earth.

15. An organism that gets its energy from other living things is _________.
- Consumer
Explanation: Consumers are organisms that obtain energy by eating other organisms (producers or other consumers).

16. _________ is a place where an organism lives and calls home.
- Habitat
Explanation: A habitat is the natural environment where an organism lives, providing the necessary conditions for survival.

17. All the living organisms on the earth make up the _________.
- Biosphere
Explanation: The biosphere is the global sum of all ecosystems and includes all living organisms on Earth.

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Final Answer:

1. Prey
2. Predator
3. Omnivore
4. Community
5. Food web
6. Decomposer
7. Ecosystem
8. Producer
9. Herbivore
10. Scavenger
11. Food chain
12. Population
13. Niche
14. Extinct organism
15. Consumer
16. Habitat
17. Biosphere

Boxed Final Answer:
\boxed{
\begin{array}{l}
1. \text{Prey} \\
2. \text{Predator} \\
3. \text{Omnivore} \\
4. \text{Community} \\
5. \text{Food web} \\
6. \text{Decomposer} \\
7. \text{Ecosystem} \\
8. \text{Producer} \\
9. \text{Herbivore} \\
10. \text{Scavenger} \\
11. \text{Food chain} \\
12. \text{Population} \\
13. \text{Niche} \\
14. \text{Extinct organism} \\
15. \text{Consumer} \\
16. \text{Habitat} \\
17. \text{Biosphere} \\
\end{array}
}